再生混凝土框架拟动力试验研究分析

Pseudo-dynamic test and analysis of Recycled Concrete Frame

对一榀单跨两层再生混凝土框架进行拟动力试验,采用不同加速度峰值的地震波激励加载,研究了框架受力特点、变形性能和耗能能力等抗震性能。试验表明,再生混凝土框架在小震作用下具有足够的强度和刚度,加载至层间位移角达1/210时,框架处于弹性工作状态,可满足中震弹性的要求。加载至层间位移角达1/120时,框架呈现塑性性能,卸载后变形能够基本恢复,研究表明再生混凝土框架具有良好的抗震性能。

Based on the pseudo-dynamic test of a specimen of two floor single-span recycled aggregate concrete frame,using different peak acceleration of earthquake waves to load,this paper researched the seismic performance of the frame such as mechanical characteristics,deformation recovery capacity and energy dissipation etc.The experiment results showed that the recycle concrete frame had sufficient strength and stiffness under the action of minor earthquakes.When the story drift angle reached to 1/210,the frame was in elastic stage.It was flexible to meet the requirements of moderate earthquake.When the story drift angle reached to 1/120,the frame shown the plastic performance.The deformation of the frame had been recovered after unloading.The research shows that recycled concrete frame has good seismic performance.